Stop-motion for looms



W. ZEEDYK.

STOP MOTION FOR LOOMS.

' APPLICATION FILED DECA13, 1918. 1,360,487, Patented Nov. 30, 1920.

3 SHEETS-SHEET l- I W. ZEEDYK.

STOP MOTION FOR LOOMS.

APPLICATION FILED DEC, 12, I918.

3 SHEETS-SHEET 2- Patented Nov. 30, 1920.

WITNESS W. ZEEDYK.

STOP MOTION FOR LOOMS.

INVENTOR, Wflham ZeedYK WITNESS:

NITED ATES PA ENT OFF CE.-

WILLIAM ZEEDYK, OE PATERSON, NEW JERSEY, ASSIGNOR T0 BENJAMIN EASTWOOD COMPANY, OF BATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

STOP-MOTION LOOMS.

Specification of Letters Patent.

Patented Nov. 30, 1920.

Application filed December 13,1918. Serial No. 266,571.

To all whom it may concern Be it known that I, )VILLIAM ZEEDYK, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Stop-Motions for Looms, of which the following is a specification.

This invention relates to weft stop motion mechanisms for looms andit consists, first, in a novel construction of the means for detecting the absence of weft or filling and thereupon transmitting the motion of the batten to movable means on the fixed part of the loom which shifts the knock-off shaft to position for stopping the loom, and, second, in a novel construction whereby the mechanism can be used, as herein shown and described, as a center stop motion (operative to detect absence of filling on each pick instead of every other pick, as in the case of the socalled side stop motion mechanisms) and particularly so that when so used said movable means shall be disposed in inoperative position with reference to the first means herein alluded to for the first pick of the loom following absence of filling and consequent stopping of theloom, 13.6., until the shuttle on its second shot following the starting up can have. laid the filling in operative relation to the detecting means, under its weft fork.

Figure 1 in the drawings is a side elevation ofa loom embracing my stop motion mechanism Fig. 2 is a front elevation of the essential parts'of what is shown by Fig. 1;

Fig. 3 is a plan view of a fragment of th batten, the weft forkand its bracket;

Fig. 4 shows the. improved stop motion mechanism in side elevation, the batten appearing' in section and the. breast-beam-ineluding part ofthe loom frame in side elevation, and the power controlling lever appearing partly in section; in this figure the batten is assumed to be moving forward and filling being absent the weft fork and dagger are. shown by solid lines in operative position to causeactuation of'the slide and consequent stopping of the loom;

Fig. 5 is a plan view of what is shown in i Fig. 4;, both the brake lever and power controlling. lever being here shown, partly in section 5' Fig. 61s view substantially similar to i ig. 4 excepting that the batten appears fullback and theweft fork elevated to permit passage of the shuttle, and except that the slide appears elevated so that on the ensuing forward movement of the batten said slide willnot receive the impact of the dagger, this view showing the said levers moved to the starting position and the batten about to advance in the first cycle of the loom following such movement of the levers;

Figs. 7,8 and 9 are views showing the slide in side elevation and the lever which it controls and certain parts which control the slide in section, Figs. 7 and 9 showing the slide in the positions it occupies before and after actuation by the dagger and Fig. 9 showing the slide in the position it occupies so as to clear the dagger onthe first pick following a starting-up;

gig. 10 is an underneath plan of'the slide; an

Fig. 11 is a sectional view on the lines 1111 of. Fig. 5. i

The batten structure a is fulcrumed in the loom frame I) at c in the usual way and is connected with the crank shaft cl by the pitman 6. From the drive. shaft 7 the power is transmitted to the crank shaft through a clutch (not shown) on shaft d, and this clutch is controlled by the aforementioned power controlling lever, g, fixed on the knock-off shaft h and operativelyconnected with the clutch in any way, as by the link 2'. There is also a brake pulley fast on the shaft (Z and around this brake pulley and fixed at one end to the frame is a brake band 70, the other end of which is connected to the rear arm of a two-armed lever I which is fulcrumed at m, said rear arm of the lever being subject to the pull of a spring a which normallyv tends to exert braking tension on the brake-band, the forward arm of the lever having a roll 0 against which a roll 17 on they lower end of the knock-off or brake-lever g (fulcrumed on knockoff shaft 71) bears when the brake lever occupies the position shown in Figs. 1, 4t and 6 to hold the forward end of the lever Z depressed so that the brake band is relaxed and the pulley and shaft d are free to turn. To start the loom the lever g is pulled forward (to the position in Fig. 1) and by a lug r on said leverthe brake lever is thus pushed forward, releasing the brake-band It; to stop. the loom the brake lever q s pu hed bac wh c e ea s the lever Z, so that the brake-band again becomes active on the pulley y', and through the lug r throws back the power controlling lever g to disengage the clutch. 'The foregoing parts are all well known.

A plate 8 is bolted to the breast-beam A at one end thereof and on a stud t adjustable in a slot u in the plate is fulcrumed a lever c, one arm of which is in the path of movement of the brake lever 9, its other argn being engaged in a notch w in the side of the slide as which may move forward and back in a suitable groove 7/ in the top of the plate and has at the end thereof adjoining the front of the loom a pair of lateral ears 2 engaged in undercut opposite grooves 2 in the plate. There is a keeperarm 3 secured to the lever 41 and overhanging the slide (Fig. 11), allowing it to rise to a limited-extent at its forward end on its ears .2 as a fulcrum. The forward end of the slide depends and is formed with a notch 4. Bolted to an overhanging portion of the plate 8 is a depending bracket 5 having a horizontally slotted arm 6. There is journaled horizontally in the plate a a light rock shaft 7 to which is secured by the set screw 8 a two'armed stop 9 which affords means to receive an impact for rocking the shaft in one direction and also serves to limit the rocking motion of the shaft to approximately 90, by said stop impinging as to one arm thereof against the top of plate 8 when the shaft rotates in one direction and as to the other arm thereof against 21 depending lug 10 on the plate 8 when said shaft rotates in the other direction. The rock-shaft has a bent portion 11 forming a crank which is arranged at an acute angle with respect to that arm of the stop which is to the left in Fig. 4, and connecting this crank with a hook 12 on the plate 8 is a spring 13; the construction is such that on turning the shaft in either direction past the position where the crank occupies the dead center relation to the point at which the spring is attached the spring will turn the shaft to the limit afford ed by one or the other of the arms of the stop 9. The rock shaft also has a crank 14 which is in the path of knock-off movement of the knock-off lever 9. On the rock shaft and under the slide is fixed a cam 15 whose high point projects upwardly,

thus elevating the slide, when the stop 9 is I in the vertical position (Fig. 6), abutting the lug 10.

The weft fork consists of a collar 16 equipped with feeler arms 17 which play up and down in the usual recess 18 in the batten B, the collar being fixed on a light shaft 19 which is journaled in brackets 20 and 21 attached to the batten, the latter housing the'collar 16. This bracket 21 ineludes an upwardly extending arm 22 penetrated by a threaded stud 23 which forms a hammer to impinge against that arm of the stop 9 which is uppermost in Fig. 6, said stud being held in the arm 22 for adjustment relatively toward and from said stop by the nuts 24. A light spring 25 coiled about the shaft 19 and connected to bracket 21 at one end and to a collar 26 on said shaft at its other end tends to hold the weft fork depressed. The free end of shaft 19 is bent off to form a crank 27 and this crank supports the dagger 28 which is pivoted at 29 between a pair of vertical cheeks 30 of bracket 21 and when the weft-fork is fully depressed is held by the spring 25 bearing with a stop face 31 thereon, longitudinally alined with the free end of the dagger, against a stop face 32 on thebracket and rearward of the dagger, so that when the dagger acts to move slide at and stop the loom the shock is received by the bracket 21 and not by the pivot of the dagger.

On a stud adjustable in the slot 6 of a bracket is pivoted a wire-link 34 having an elongated loop 35 receiving a pin 36 on the side of the dagger.

The slide at has on the under side a pair of inclined cam surfaces 37 to engage the plate 8 at the points 38 (Fig. 5), when the slide is forced back by the dagger, as hereinafter explained.

Operation: So long as the loom operates without failure of filling the dagger on each beating-up movement of the batten will obviously assume the dotted line position in Fig. l and so clear the slide :20. If the filling fails, the dagger will assume the full-line position in Fig. 4 and when the batten moves to beat-up the dagger will engage in the notch 4 of the slide and push the latter in its guide-way 7 and consequently cause lever Q) to impart knock-off movement of lever Q, and consequently lever g. Comparatively little movement of the lever o is required to cause roll 22 of the knock-off lever to clear roll 0, and when this movement is accomplished it is unnecessary to advance the slide farther; hence, when the said movement is about complete the inclines 37 on the under side of the slide ride up on the plate 8 so that the slide clears the dagger (see Fig. 8). When the loom is started again, the resetting of the knock-off lever will obviously through lover a: move the slide forward again, though not in position to be engagcable by the dagger, as in Fig. 4:, but in the position to be missed by the dagger, as in Fig. 9, as will appear. It will be understood that. the link 84 causes depression of the dagger and consequent elevation of the weft fork each time the batten recedes, in order to allow the shuttle to pass under the weft fork.

When failure of weft occurs, the loom stops while the batten is performing the for ward movement which causes knocking-off movement of the lever q. Thereupon the weaver usually releases the brake, b pulling forward on brake lever and pus es the batten back so that he can perform certain manipulations of the shuttle and filling neccessary to reestablishing the weft in the weaving process. On now starting the loom again by pulling forward lever g the first forward movement of the dagger with the batten would obviously result in another stopping of the loom (since there is no filling yet present under the weft-fork to hold the dagger depressed clear of the slide) were it not for the cam 15, which, when the lever Q was moved to the knock-ofi' position and by striking crank 14 rocked the shaft 7 to the position shown in Fig. 6, became turned to hold the slide out of the path of the dagger, so that the latter will miss it (Fig. 9). The resetting of the slide in position to be engageable by the dagger (Fig. 7) is effected, immediately following the dagger thus missing the slide, by contact of the hammer 23 with the upper arm of stop 9, resulting in rocking the shaft 7 to the (normal) position shown in Fig. 4, so that by the time the dagger makes its next or second forward movement the shuttle will have assed again across the batten to lay the filling under the weftfork and so hold the dagger depressed to clear the slide, unless of course there has occurred another failure of filling.

It is not broadly new to provide for rendering the mechanism inactive to stop the loom on the first beating-up movement following stopping; but this has usually been accomplished bya shield which on stopping is automatically locked in position to fend the dagger off and prevent its actuating the knock-oil mechanism for the first beating-up movement after starting, to be tripped by the batten to clear the dagger for the second beating-up movement. It is obvious that my construction avoids the impact (as of the dagger with such a shield) characterizing the known mechanism referred to.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is:

1. In combination, with the supporting structure and moving batten structure of a loom, knock-off means including an actuated member on said supporting structure, and weft-controlled means to actuate said mem ber including a dagger projecting toward said member from the batten structure and movable up and down in the latter and normally impelled downward, a weft-fork device pivotally arranged in the batten structure and having an eccentric portion in wiping contact with an under face of the dagger longitudinally of the latter, said device being normally turned on its pivot in the direction to elevate the dagger and thus normally holding the latter elevated, and means to move the weft controlled means in the opposite direction on backward movement of the batten structure.

2. In combination, with the supporting structure and the moving batten structure of a loom, a movable knock-off member carried by said supporting structure, a battenstructure-moved weft-controlled train of parts for actuating said member on a forward movement of the batten structure and including a coengaging'dagger and slide, the slide being shiftable pivotally on an axis re mote from the dagger to clear itself therefrom, and means on movement of said train by the batten structure to shift said slide on its axis clear of the same thereby to disestablish said train.

In combination, with the supporting structure and the moving batten structure of a loom, a weft-controlled dagger on the batten structure movable therein into and out of a given path of movement therewith, a movable knock-off mechanism including a dagger-actuated slide -adapted to be moved by the dagger in said path relatively from the batten structure and resettable toward the batten structure and to a position out of said path, movable means, actuated by the knock-off mechanism on movement of said slide by the dagger, to establish said slide in said position on the resetting of said slide toward the batten incident to again starting the loom, and means, upon the dagger missing said slide on its first forward movement with the batten after such starting, to move the first means and thereby establish said slide back in said path.

4:. In combination, with the supporting structure and the moving batten structure of a loom, a weft-controlled dagger on the batten structure movable therein into and out of a given path of movement therewith, a movable knock-off mechanism including a dagger-actuated slide adapted to be moved by the dagger in said path relatively from the batten structure and resettable toward the batten structure and to a position out of said path, rocking means, adapted to be rocked in one direction by the knock-off mechanism on movement of said slide by the dagger, to establish said slide in said position on the resetting of said slide toward the batten incident to again starting the loom, and means, upon the dagger missing said slide on its first forward movement with the batten after such starting, to rock the first means in the other direction and thereby establish said slide back in said path.

In testimony whereof I affix my signature. 

